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Method for producing H-shaped steel
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Patent number 10,730,086
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Issue date Aug 4, 2020
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Nippon Steel Corporation
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Hiroshi Yamashita
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rolling stand for producing rolled strip
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Patent number 9,789,521
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Issue date Oct 17, 2017
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PRIMETALS TECHNOLOGIES AUSTRIA GMBH
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Robert Minichmayr
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Six high rolling mill
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Patent number 5,622,073
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Issue date Apr 22, 1997
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Kawasaki Steel Corporation
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Toshiki Hiruta
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3890817
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Patent number 3,890,817
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Issue date Jun 24, 1975
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3387470
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Patent number 3,387,470
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Issue date Jun 11, 1968
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2732591
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Patent number 2,732,591
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Issue date Jan 31, 1956
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL